Mercedes-Benz C-Class Saloon 2022 Owner's Manual page 534

Display messages
Tyre pressure monitor inop-
erative No tyre pressure
sensors
é
Wheel sensor(s) missing
é
Check tyre(s)
Possible causes/consequences and
* The wheels fitted do not have suitable tyre pressure sensors. The tyre pressure monitoring system is deactivated.
Fit wheels with suitable tyre pressure sensors.
#
* There is no signal from the tyre pressure sensor in at least one wheel. No pressure value is displayed for the affected
tyre.
Have the faulty tyre pressure sensor replaced at a qualified specialist workshop.
#
* The tyre pressure in one or more tyres has dropped significantly.
The wheel position is displayed. A warning tone will also sound.
& WARNING Risk of an accident due to insufficient tyre pressure
The tyres can burst.
R
The tyres can wear excessively and/or unevenly.
R
The driving characteristics as well as the steering and braking may be greatly impaired.
R
You could then lose control of the vehicle.
Observe the recommended tyre pressures.
#
Adjust the tyre pressure if necessary.
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Stop the vehicle in accordance with the traffic conditions.
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Solutions
M
Display messages and warning/indicator lamps 531